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New posts in undefined-behavior

Why does a mismatching printf specifier also affect subsequent arguments?

c printf undefined-behavior variadic-functions calling-convention

How can unions be used to bypass strict aliasing violations?

c undefined-behavior unions strict-aliasing

At which exact statement does this program exhibit Undefined behavior as per the C++ standard?

c++ undefined-behavior

Putting 'noexcept' on possible UB

c++ function undefined-behavior noexcept

Reference to a temporary variable - why doesn't compiler detect it?

c++ compiler-warnings undefined-behavior

Does gcc initialize long strings to `""` but not short ones?

c gcc undefined-behavior

C++ access violation in msvc but not gcc for multiple inheritance and cast

c++ undefined-behavior virtual-inheritance memory-layout type-punning

Initializing an array of trivially_copyable but not default_constructible objects from bytes. Confusion in [intro.object]

c++ language-lawyer undefined-behavior strict-aliasing

Javascript Can't Call Push On Array Inside Another Function [duplicate]

javascript arrays function push undefined-behavior

Could deleting complete class type result in undefined behavior?

c++ undefined-behavior

Accessing a struct member from what is not the same struct type

c pointers struct undefined-behavior

Example of undefined behaviour involving the use of const_cast

c++ gcc constants compiler-optimization undefined-behavior

Why output of array to pointer is not related

c++ arrays pointers scope undefined-behavior

Unexpected bitshift behavior in C [duplicate]

c undefined-behavior bit-shift

Downcast to derived class in CRTP base class constructor: UB or not? [duplicate]

c++ language-lawyer undefined-behavior crtp downcast

Does undefined behaviour retroactively mean that earlier visible side-effects aren't guaranteed?

c gcc language-lawyer compiler-optimization undefined-behavior

Is this declaration UB?

c language-lawyer undefined-behavior

Polymorphic update on struct fields in Rust

rust undefined-behavior unsafe

Is it undefined behaviour to use pointer after allocated memory?

c language-lawyer undefined-behavior

Is accessing arrays out-of-bounds legal if what lies beyond those bounds is known in C? If not why not and how can this be worked around?

arrays c undefined-behavior
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